Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Chelicerata Heymons, 1901
       Class Arachnida Lamarck, 1801
         Superorder Acariformes Zakhvatkin, 1952 - mitelike mites
           Order Trombidiformes Reuter, 1909
             Suborder Prostigmata Kramer, 1877
               Infraorder Anystina van der Hammen, 1972
                 Hyporder Parasitengona Oudemans, 1909
                   Superfamily Hydryphantoidea Piersig, 1896 - water mites
                     1 Family Hydryphantidae Piersig, 1896
                     2 Family Hydrodromidae Viets, 1936
                     3 Family Rhynchohydracaridae Lundblad, 1936
                     4 Family Teratothyadidae Viets, 1929
                     5 Family Ctenothyadidae Lundblad, 1936
                     6 Family Thermacaridae Sokolow, 1927
                     7 Family Zelandothyadidae Cook, 1983
                     8 Family Malgasacaridae Tuzovskij, Gerecke & Goldschmidt, 2007 see Family Zelandothyadidae Cook, 1983